Heat-saving appliance



July 21. 1925.

P. 'G. DORE HEAT SAVING APPLIANCE Filed March 19, 1924 [Mk/Toff My. M a).Xfro/ A-r/ Patented July 21, 1925'.

PAUL e. none, or rrrrwaunns, WISCONSIN.

i-rna'nsavrne' APPLIANCE.

Application filed March 19, 1924. Serial No. 700,196.

To all whom it may concern:

'Be 1t known that PAUL G. Donn, a. citizen of the United States residingat lvlilwaukee,

in the county of Milwaukee and State of ll isconsin, has invented acertain new and useful Heat-Saving Appliance, of which the following isa specification.

This invention relates in general to improvements in the art of heattransfer, and relates more specifically to improvements in theconstruction and operation of appliances especially associable with gasor oil burners,

for the purpose of eliminating waste of fuel and heat.

Ingeneral, an object of the present invention is to provide an improvedfuel burning appliance which is simple in construction and "efficient inoperation.

Some of the more specific objects of the inventionmay be summarized asfollows To provide a burnerv applianceespecially adaptedforthexcombustion of gas or oil, which will economize in the use of fueland which will eliminate waste of heat.

To provide an attachment for gaseous fuel burners, which will thoroughlymix the fuel with the oxidizing agent thereby insuring more elfectivecombustion and reducing to a minimum the fuel consumption.

Toprovide a fuel burner which will antomatically and effectivelyconcentrate the flame upon the most efliclent heat transfer-- ringportion of objects being heated.

ing the operation of such burners.

To provide improved supporting means for fuel economizers, which willautomatr callyproperly position the device and which permits readyapplication a and removal thereof. a 7

To provide an attachmentfor gas burners or the like, which willautomatically maintain such burners in clean condition by preventingaccumulation of forelgn substances in and adjacent to the fuelsupplyopenings. To provide aheat saving device which is capable of effectivelyresistinghigh temperatures andvvhich has the ability to act as anaccumulator for the storage or reten tion of heat for some time afterthe flame has been extinguished.

To provide a fuel economizer which may of fuel gas toward a grid5\ hadby referring to the drawing accompanying and forming a part of thisspecification, in which like reference characters designate the same orsimilar parts in the various views. V

Fig. 1 is atopview' of a standard star shaped gas burner having animproved heat saving appliance associated therewith.

Fig. 2 is a centralvertical section through a standard star-shapedburner and an improved heat saving appliance associated therewith,showing the burner delivering a flame against a kettle supportedthereabove.

Fig. 3 is a side elevation of an improved heat saving appliance.

7 While the invention will be specifically described herein as havingbeen applied to a standard fuel gas burner, it is not desired to havesuch disclosure act as a limitation in scope, and it will be obviousthat the improved economizing appliance is'applicable to other forms ofburners as well as'to burners adapted to utilize other kinds of fuels.

The standard star-shaped fuel gas burner 4 comprises generally aplurality of hollow i radiallydisposed fuel distributing elements Toprovide an appliance which is co-nveniently applicable to any standardfuel gas or oil burner for the purpose of improv i ments is providedwith a plurality of upwardly directed fuel discharge openings 7 adaptedto deliver substantially parallel jets 3 The grid 5 is located somedistance above the burner 4: and iscapable of supporting a kettle 6 orother objects which it is desired. to heat, above the openings 7 asindicated in Fig. 2. The grids 5 are readily removable to permitcleaning or removal of the burners 4E.

The improved heat saving appliance consists of an annular upwardlyconverging wall or deflector 2 forming a. converging flame directingpassage 13 communicating with an upper circular central unobstructedflame discharge opening 1d, and means for properly supporting thedeflector relatlvely to the burner 41:. The defleoto=rsupporting bemanufactured and sold at minimum cost. means comprises aseries of fourdownwardly converging supporting and centering arms 3 extending throughthe passage 13 to a point below the deflector 2 and integrally unitedcentrally below the discharge opening 14 of the deflector 2. These armsconstitute the sole means for supporting the economizer when applied toa standard starshaped burner t having a relatively small central hole 9as shown. Auxiliary supportin means comprising a series of four feet orlugs 11 are also provided for the purpose of properly supporting theeconomizer relatively to burners having relatively large centralopenings. The arms 3 and the lugs 11 are preferably cast integral witheach other and with the deflector 2, these sup ports depending from. theunderside of the deflector wall. The economizer is preferably formed ofrelatively massive structure and is cast of metal which is capable ofresisting high temperatures and of retaining heat for a relatively longperiod of time.

In order to apply one of the improved heat saving appliances to a burner94 the standard star-shaped type, it is only necessary to remove thegrid 5 and to insert the lower ends of the depending arms 3 of theappliance into the central opening 9 of the burner 4. The convergingarms 3 then serve to automatically support the appliance above theburner as shown in Fig. 2, and simultaneously function to properlycenter the deflector 2 relatively to the radial fuel distributingelements of the burner 4-. When applying the appliance to other types ofburners having no relatively small central hole 9, the feet or lugs llformed on the under-side of the deflector wall 2 are permitted to restdirectly upon the upper surface of the burner. These lugs ll are socurved that they will function to antomatically center the appliancerelatively to a burner engaged thereby. The appliance is freelyvertically removable from any type of burner to permit cleaning or remo'val of the burner.

During normal operation of a burner 4: having the improved economizerproperly applied, the fuel is continuously supplied from the pipelO tothe interior of the'burn- 4 from whence it is delivered in the form ofindividual jets, upwardly through the openings The jets of fuel thusdelivered from the openings 7 are ignited after being mixed with airpassing upwardly through the openings 8, to produce upwardly directedradial rows of flame 12. As the rows of flame 12 advance upwardlythrough the passage 13, the upwardly converging deflector 2 graduallyconstricts the cross sectional area of the flame and consolidates theseveral individual rows .of flame into one central circular homogeneousflame 12 at the upper discharge opening 1 1- of the appliance. Thissingle homogeneous flame 12 is delivered upwardly from the unobstructedopening 14, directly against the lower central portion of the kettle 6whereupon the flame 12 spreads laterally and uniformly over the entirebottom of the kettlc 6. The quantity of fuel admitted through the pipe10 should be so adjusted that the flame 12 will be substantiallyconfined to the bottom of the kettle 6 and does not advance upwardlyalong the kettle side walls to any appreciable extent. In this mannerthe heat resulting from ignition and combustion of the fuel iseffectively and aut-r'nnatically concentrated to most efficiently heatthe kettle 6 without waste of fuel or heat.

It will th be noted that the improve-c econoniizer besides eliminatingwaste of heat, serves to produce an absolutely homogcneous flame 12 byeffectively mixing the fuel with the oxidizing agent and consolidatingthe several rows of flame, thereby insuring complete combustion of thefuel.

The appliance is obviously readily applicable to and removable from anystandard fuel gas or oil burner to improve the operation thereof. Thelugs 11 and the arms} autonuitically function to both support afllcenter the appliance without the aid of complicated attaching mechanism.The converging annular wall or deflector 2 besides functioning ashereinbefore stated to economize in he use of fuel and to eliminatewaste of heat, serves to automatically maintain the l'uirner 4% clean bypreventing substances which may drip from the objects being heated, fromdropping upon the burner and clogging the openings 7. Such drippingsflow downwardly along the outer flaring surface of the deflector 2 andeventually drop from the peripheral edge of the deflector upon the usualdrip catch pan disposed beneath the burners. By forming the appliance ofheat resisting and retaining metal such as maleable or gray iron, the

eccnomizer may be utilized a radiator to maintain kettles or otherobjects warm for a relatively long period of time after the flame hasbeen extinguished. The appli ance is obviously extremely simple inconstruction being formed of a single casting which requires nofinishing whatever, there by permitting manufacture thereof at minimumcost.

It should be understood that it is not desired to limit the presentinvention to the exact details of construction and opera tion hereinshown and described, for various modifications within the scope of theclaims may occui to persons skilled in the 125 art.

It is claimed and desired to. secure by Letters Patent 1. A heat savingappliance comprising an annular upwardly converging Wall forming a flameconcentrating passage, and a plurality of downwardly converging armsunited centrally within said passage.

2. A heat saving appliance comprising a circular upwardly convergingwall forming a flame concentrating passage, and a plurality ofdownwardly converging arms extending downwardly and united below saidwall.

8. A heat saving appliance comprising an annular upwardly convergingwall forming a constricted circular flame concentrating passage, and aplurality of radially disposed arms united centrally below said passage.

4c. A heat saving attachment for starshaped burners, comprising anannular upwardly and inwardly curved wall forming a constrictedunobstructed central flame concentrating passage, and a plurality ofcombined supporting and centering lugs formed integral with andprojecting downwardly from the under side of said wall, said lugs beingadapted to coact directly with and to maintain the peripheral edge ofsaid wall free from contact with a burner.

5. A heat saving attachment for starshaped burners, comprising anannular upwardly converging wall forming a constricted unobstructedupwardly directed cene tral flame concentrating passage, and a pluralityof supporting lugs formed integral with the under side of said wall,said lugs being adapted to coact directly with and to automaticallycenter said attachment relatively to a star-shaped burner with the edgeof said wall spaced from said burner. V

In testimony whereof, the signature of the inventor is affixed hereto.

PAUL G. DORE.

